It depends on whether you are to buy the Premium Membership or books.
You need a Paypal account to sign up for the Premium Membership because recurring payments for a subscription require customers to have an account.
However, you don't need a Paypal account to purchase our books. First, please choose the "Credit Card (Recommended)" option on the checkout page. Then, click on the "Pay with Debit or Credit Card" button on the PayPal payment window and fill in your card information.
※ This interface only appears for book purchases. You need a Paypal account when you purchase the Premium Membership.